# US 10,441,524 B2 · Cosmetic and household care composition

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- Number: US 10,441,524 B2
- Document ID: US10441524B2
- Status: Granted
- Kind: B2
- Application number: 14/916,873
- Filed: 2013-11-20
- Published: 2016-07-07
- Granted: 2019-10-15
- Earliest claimed: 2013-09-04
- Assignees: Lamberti SPA
- Applicants: Lamberti SPA
- Inventors: Valentina Langella; Mauro Riccaboni; Barbara Biasotti; Chiara Fumagalli; Giovanni Floridi; Giuseppe Li Bassi
- Web page: https://patentgrep.com/patent/US10441524B2

## CPC

- A61K 8/737: {Galactomannans, e.g. guar; Derivatives thereof}
- A61K 8/19: containing inorganic ingredients
- A61K 8/416: {Quaternary ammonium compounds (A61K8/35 takes precedence)}
- A61K 8/73: Polysaccharides
- A61Q 5/02: Preparations for cleaning the hair
- A61Q 5/12: Preparations containing hair conditioners
- A61Q 19/10: Washing or bathing preparations
- A61K 2800/30: Characterized by the absence of a particular group of ingredients
- A61K 2800/48: Thickener, Thickening system
- A61K 2800/5426: cationic
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS

## Abstract

Personal care and household care compositions comprising a conditioner and rheology modifier based on a cationic galactomannan or cationic xyloglucan having cationic degree of substitution comprised between 0.01 and 3, free from (3-chloro-2-hydroxypropyl)trimethyl ammonium chloride and free from (2,3-epoxypropyl)trimethyl ammonium chloride.

## Claims

### Claim 1

A procedure for preparing a conditioner and rheology modifier comprising:
i) from 60 to 90% by weight of a cationic galactomannan or a cationic xyloglucan, having a cationic degree of substitution of from about 0.01 to about 3;
ii) from 1% to 10% by weight of (2,3-dihydroxypropyl)trimethyl ammonium chloride; and
iii) less than 0.15% by weight of (3-chloro-2-hydroxypropyl)trimethyl ammonium chloride; comprising:
a) reacting 100 parts by weight of galactomannan or xyloglucan with from 1 to 600 parts by weight of (3-chloro-2-hydroxypropyl)trimethyl ammonium chloride or of (3-epoxypropyl)trimethyl ammonium chloride with from 0.4 to 200 parts by weight of sodium hydroxide (or an equivalent amount of another alkaline hydroxide) in from 5 to 500 parts of water or of a water/alcohol mixture containing from 20 to less than 100% by weight of water;
b) adding from 0.1 to 400 parts by weight of sodium hydroxide (or an equivalent amount of another alkaline hydroxide) to a mixture obtained from step a) and stirring for from 10 to 300 minutes, at a temperature of from 30° C. to 90° C.; and
c) with no purification by washing with water or solvents, drying and milling a mixture obtained from step b);
wherein the cationic galactomannan or cationic xyloglucan has a cationic degree of substitution of from about 0.05 to about 0.7 and the conditioner and rheology modifier has a residual concentration of (2,3-epoxypropyl)trimethyl ammonium chloride of less than 0.15% by weight.

### Claim 2 (depends on 1)

The procedure of claim 1 wherein the pH of the mixture obtained from Step b) is corrected with an acid.

### Claim 3 (depends on 1)

The procedure of claim 1 wherein the stirring in step b) is for from 60 to 150 minutes.

### Claim 4 (depends on 1)

The procedure of claim 1 wherein the temperature in step b) is from 45° C. to 80° C.

### Claim 5 (depends on 1)

The procedure of claim 1 wherein in step a) 100 parts by weight of galactomannan or xyloglucan are reacted with from 1 to 600 parts by weight of (3-chloro-2-hydroxypropyl) trimethyl ammonium chloride.

### Claim 6 (depends on 5)

The procedure of claim 5 wherein in step b) from 2 to 90 parts by weight of sodium hydroxide (or equivalent amount of another alkaline hydroxide) are added.